EP3372570A1 - Zwischenschicht für verbundglas sowie verbundglas - Google Patents

Zwischenschicht für verbundglas sowie verbundglas Download PDF

Info

Publication number
EP3372570A1
EP3372570A1 EP16862219.9A EP16862219A EP3372570A1 EP 3372570 A1 EP3372570 A1 EP 3372570A1 EP 16862219 A EP16862219 A EP 16862219A EP 3372570 A1 EP3372570 A1 EP 3372570A1
Authority
EP
European Patent Office
Prior art keywords
region
thickness
interlayer film
increase
laminated glass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP16862219.9A
Other languages
English (en)
French (fr)
Other versions
EP3372570A4 (de
Inventor
Yuusuke Oota
Ryuta Tsunoda
Hiromitsu NISHINO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Publication of EP3372570A1 publication Critical patent/EP3372570A1/de
Publication of EP3372570A4 publication Critical patent/EP3372570A4/de
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10559—Shape of the cross-section
    • B32B17/10568—Shape of the cross-section varying in thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2331/00—Polyvinylesters
    • B32B2331/04—Polymers of vinyl acetate, e.g. PVA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2551/00—Optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features

Definitions

  • the present invention relates to an interlayer film for laminated glass which is used for obtaining laminated glass. Moreover, the present invention relates to laminated glass prepared with the interlayer film for laminated glass.
  • laminated glass Since laminated glass generally generates only a small amount of scattering glass fragments even when subjected to external impact and broken, laminated glass is excellent in safety. As such, the laminated glass is widely used for automobiles, railway vehicles, aircraft, ships, buildings, and the like.
  • the laminated glass is produced by sandwiching an interlayer film for laminated glass between a pair of glass plates.
  • a head-up display As the laminated glass used for automobiles, a head-up display (HUD) has been known.
  • HUD head-up display
  • measured information such as the speed which is traveling data of the automobile and the like can be displayed.
  • Patent Document 1 discloses a sheet of laminated glass in which a wedge-shaped interlayer film having a prescribed wedge angle is sandwiched between a pair of glass plates.
  • a display of measured information reflected by one glass plate and a display of measured information reflected by the other glass plate can be focused into one point to make an image in the visual field of a driver.
  • the display of measured information is hard to be observed doubly and the visibility of a driver is hard to be hindered.
  • Patent Document 2 discloses laminated glass being provided with an outer surface and an inner surface and having one or more regions where the outer surface and the inner surface form a wedge angle with each other in order to prevent or reduce interfering double images.
  • the outer surface and the inner surface have continuously changing wedge angles.
  • the wedge angles at the respective positions depend on an incident angle of a local light beam and a local radius of curvature of the laminated glass.
  • An object of the present invention is to provide an interlayer film for laminated glass with which double images can be effectively suppressed. Moreover, the present invention is also aimed at providing laminated glass prepared with the above-mentioned interlayer film for laminated glass.
  • an interlayer film for laminated glass having one end and the other end thicker in thickness than the one end, and having a region where the thickness is made to increase in a direction from one end side to the other end side and having a portion where the amount of increase in the thickness is increased in the direction from one end side to the other end side in the region where the thickness is made to increase, or having a region where the sectional shape in the thickness direction is a wedge-like shape and having a portion where the wedge angle is increased in a direction from one end side to the other end side in the region where the sectional shape in the thickness direction is a wedge-like shape.
  • the interlayer film when a distance between the one end and the other end of the interlayer film is defined as X, the interlayer film has a portion where the amount of increase in the thickness in an overall first region extending over a distance range of 0.1X where the thickness is made to increase is larger than the amount of increase in the thickness in an overall second region extending over a distance range of 0.1X, being located closer to the one end side than the first region and connected to the first region, where the thickness is made to increase, and the second region and the first region are connected in this order in the direction from one end side to the other end side.
  • the interlayer film has a portion where the amount of increase in the thickness in an overall third region extending over a distance range of 0.1X where the thickness is made to increase is larger than the amount of increase in the thickness in the overall first region extending over a distance range of 0.1X, being located closer to the one end side than the third region and connected to the third region, where the thickness is made to increase, and the second region, the first region, and the third region are connected in this order in the direction from one end side to the other end side.
  • the absolute value of a difference between the ratio of the amount of increase in the thickness in the overall first region to the amount of increase in the thickness in the overall second region and the ratio of the amount of increase in the thickness in the overall third region to the amount of increase in the thickness in the overall first region is 0.2 or less.
  • the interlayer film has a region where the sectional shape in the thickness direction is a wedge-like shape and has a portion where the wedge angle is increased in a direction from one end side to the other end side in the region where the sectional shape in the thickness direction is a wedge-like shape.
  • the interlayer film when a distance between the one end and the other end of the interlayer film is defined as X, the interlayer film has a portion where the wedge angle in an overall first region extending over a distance range of 0.1X where the thickness is made to increase is larger than the wedge angle in an overall second region extending over a distance range of 0.1X, being located closer to the one end side than the first region and connected to the first region, where the thickness is made to increase, and the second region and the first region are connected in this order in the direction from one end side to the other end side.
  • the interlayer film has a portion where the wedge angle in an overall third region extending over a distance range of 0.1X where the thickness is made to increase is larger than the wedge angle in the overall first region extending over a distance range of 0.1X, being located closer to the one end side than the third region and connected to the third region, where the thickness is made to increase, and the second region, the first region, and the third region are connected in this order in the direction from one end side to the other end side.
  • the interlayer film contain a thermoplastic resin. It is preferred that the thermoplastic resin be a polyvinyl acetal resin. It is preferred that the interlayer film contain a plasticizer.
  • the interlayer film is provided with a first layer and a second layer arranged on a first surface side of the first layer.
  • the interlayer film is arranged between first and second lamination glass members having a flat plate-like shape or between first and second lamination glass members having a curvature radius of 15000 mm or less to be used.
  • laminated glass including a first lamination glass member, a first lamination glass member, a second lamination glass member, and the above-described interlayer film for laminated glass, the interlayer film for laminated glass being arranged between the first lamination glass member and the second lamination glass member.
  • the interlayer film for laminated glass according to the present invention has one end and the other end thicker in thickness than the one end, and has a region where the thickness is made to increase in a direction from one end side to the other end side and has a portion where the amount of increase in the thickness is increased in the direction from one end side to the other end side in the region where the thickness is made to increase, or has a region where the sectional shape in the thickness direction is a wedge-like shape and has a portion where the wedge angle is increased in a direction from one end side to the other end side in the region where the sectional shape in the thickness direction is a wedge-like shape, double images can be effectively suppressed.
  • A1 to A10 each represent a straight line segment in the case of assuming that the surface of an interlayer film portion extending between both ends apart from each other by a distance of 0.1X is a flat surface, and the wedge angle is determined from inclinations of two surfaces respectively at both sides instead of being determined from only an inclination of a surface at one side shown in Fig. 11 ).
  • the interlayer film according to the present invention is provided with the above-described configuration, double images can be effectively suppressed.
  • a head-up display HUD
  • the measured information such as the speed which is traveling data of an automobile or the like
  • double images can be effectively suppressed.
  • double images can be effectively suppressed.
  • interlayer film according to the present invention be provided with the foregoing Constitution (1), and it is also preferred that the interlayer film be provided with the foregoing Constitution (2) .
  • the second region and the first region are connected in this order in the direction from one end side to the other end side.
  • the first region and the second region are regions continuously arranged in a direction connecting one end and the other end of the interlayer film.
  • the total region of the first region and the second region is a region extending over a distance range of 0.2X.
  • the first region is arranged at an arbitrary position between a position at a distance of 0.1X from one end of the interlayer film and a position at a distance of 1X therefrom (within a region ranging from 0.1X to 1X) and is a region extending over a distance range of 0.1X within a range from a position at a distance of 0.1X from one end of the interlayer film to a position at a distance of 1X therefrom.
  • the interlayer film have a portion where the amount of increase in the thickness in an overall first region extending over a distance range of 0.1X where the thickness is made to increase is larger than the amount of increase in the thickness in an overall second region extending over a distance range of 0.1X, being located closer to the one end side than the first region and connected to the first region, where the thickness is made to increase and have a portion where the amount of increase in the thickness in an overall third region extending over a distance range of 0.1X where the thickness is made to increase is larger than the amount of increase in the thickness in the overall first region extending over a distance range of 0.1X, being located closer to the one end side than the third region and connected to the third region, where the thickness is made to increase.
  • the three regions continuously arranged satisfy these relationships.
  • the second region, the first region, and the third region are connected in this order in the direction from one end side to the other end side.
  • the first region, the second region, and the third region are regions continuously arranged in a direction connecting one end and the other end of the interlayer film.
  • the total region of the first region, the second region, and the third region is a region extending over a distance range of 0.3X.
  • the first region is arranged at an arbitrary position between a position at a distance of 0.1X from one end of the interlayer film and a position at a distance of 0.9X therefrom (within a region ranging from 0.1X to 0.9X) and is a region extending over a distance range of 0.1X within a range from a position at a distance of 0.1X from one end of the interlayer film to a position at a distance of 0.9X therefrom.
  • the second region is arranged at an arbitrary position between a position at a distance of 0X from one end of the interlayer film and a position at a distance of 0.8X therefrom (within a region ranging from 0X to 0.8X) and is a region extending over a distance range of 0.1X within a range from a position at a distance of 0X from one end of the interlayer film to a position at a distance of 0.8X therefrom.
  • the third region is arranged at an arbitrary position between a position at a distance of 0.2X from one end of the interlayer film and a position at a distance of 1X therefrom (within a region ranging from 0.2X to 1X) and is a region extending over a distance range of 0.1X within a range from a position at a distance of 0.2X from one end of the interlayer film to a position at a distance of 1X therefrom.
  • a region defined by summing up the first region, the second region, and the third region is arranged at an arbitrary position between a position at a distance of 0X from one end of the interlayer film and a position at a distance of 1X therefrom (within a region ranging from 0X to 1X) and is a region extending over a distance range of 0.3X within a range from a position at a distance of 0X from one end of the interlayer film to a position at a distance of 1X therefrom.
  • a ratio of the amount of increase in the thickness between two regions adjacent to each other be uniform.
  • a ratio of the amount of increase in the thickness between two regions adjacent to each other be uniform.
  • the absolute value of a difference between the ratio (A1/A2) of the amount (A1) of increase in the thickness in the overall first region to the amount (A2) of increase in the thickness in the overall second region and the ratio (A3/A1) of the amount (A3) of increase in the thickness in the overall third region to the amount (A1) of increase in the thickness in the overall first region is preferably 0.2 or less, more preferably 0.15 or less, further preferably 0.1 or less, and especially preferably 0.05 or less. It is preferred that the three regions continuously arranged satisfy these relationships.
  • the interlayer film have a portion where the wedge angle in an overall first region extending over a distance range of 0.1X where the thickness is made to increase is larger than the wedge angle in an overall second region extending over a distance range of 0.1X, being located closer to the one end side than the first region and connected to the first region, where the thickness is made to increase.
  • the second region and the first region are connected in this order in the direction from one end side to the other end side.
  • the interlayer film have a portion where the wedge angle in an overall first region extending over a distance range of 0.1X where the thickness is made to increase is larger than the wedge angle in an overall second region extending over a distance range of 0.1X, being located closer to the one end side than the first region and connected to the first region, where the thickness is made to increase and have a portion where the wedge angle in an overall third region extending over a distance range of 0.1X where the thickness is made to increase is larger than the wedge angle in the overall first region extending over a distance range of 0.1X, being located closer to the one end side than the third region and connected to the third region, where the thickness is made to increase.
  • the second region, the first region, and the third region are connected in this order in the direction from one end side to the other end side. It is preferred that the three regions continuously arranged satisfy these relationships.
  • a ratio (B1/B2) of the wedge angle (B1) in the overall first region to the wedge angle (B2) in the overall second region is preferably 1.02 or more and more preferably 1.10 or more and is preferably 1.25 or less and more preferably 1.18 or less.
  • a ratio (B3/B1) of the wedge angle (B3) in the overall third region to the wedge angle (B1) in the overall first region is preferably 1.02 or more and more preferably 1.10 or more and is preferably 1.25 or less and more preferably 1.18 or less.
  • the wedge angle ratio of two regions adjacent to each other be uniform.
  • n represents an integer of 2 to 10.
  • the absolute value of a difference between the ratio (B1/B2) of the wedge angle (B1) in the overall first region to the wedge angle (B2) in the overall second region and the ratio (B3/B1) of the wedge angle (B3) in the overall third region to the wedge angle (B1) in the overall first region is preferably 0.2 or less, more preferably 0.15 or less, further preferably 0.1 or less, and especially preferably 0.05 or less. It is preferred that the three regions continuously arranged satisfy these relationships.
  • the interlayer film has a first surface and a second surface respectively at both sides in the thickness direction.
  • the largest value of the amount of increase in the thickness may be 100 ⁇ m or less, may be 50 ⁇ m or less, may be 10 ⁇ m or less, and may be 1 ⁇ m or less.
  • Fig. 1 is a sectional view schematically showing an interlayer film for laminated glass in accordance with a first embodiment of the present invention.
  • Fig. 1 a section in the thickness direction of an interlayer film 11 is shown.
  • the thicknesses of an interlayer film and respective layers constituting the interlayer film and the wedge angle ⁇ are shown so as to be different from actual thicknesses thereof and an actual wedge angle.
  • the interlayer film 11 is provided with a first layer 1 (intermediate layer), a second layer 2 (surface layer), and a third layer 3 (surface layer).
  • the second layer 2 is arranged on a first surface side of the first layer 1 to be layered thereon.
  • the third layer 3 is arranged on a second surface side opposite to the first surface of the first layer 1 to be layered thereon.
  • the first layer 1 is arranged between the second layer 2 and the third layer 3 to be sandwiched therebetween.
  • the interlayer film 11 is used for obtaining laminated glass.
  • the interlayer film 11 is an interlayer film for laminated glass.
  • the interlayer film 11 is a multilayer interlayer film.
  • the interlayer film 11 has one end 11a and the other end 11b at the opposite side of the one end 11a.
  • the one end 1a and the other end 11b are end parts of both sides facing each other.
  • the sectional shape in the thickness direction of each of the second layer 2 and the third layer 3 is a wedge-like shape.
  • the sectional shape in the thickness direction of the first layer 1 is a rectangular shape.
  • the thickness of the one end 11a side of each of the second layer 2 and the third layer 3 is thinner than that of the other end 11b side thereof. Accordingly, the thickness of the one end 11a of the interlayer film 11 is thinner than the thickness of the other end 11b thereof. Accordingly, the interlayer film 11 has a region being thin in thickness and a region being thick in thickness.
  • the whole interlayer film 11 has a region where the thickness is made to increase. Furthermore, the interlayer film 11 has a region where the thickness is made to increase in a direction from one end 11a side to the other end 11b side and has a portion where the amount of increase in the thickness is increased in the direction from one end 11a side to the other end 11b side in the region where the thickness is made to increase. Specifically, in the interlayer film 11, in the whole interlayer film 11, the amount of increase in the thickness is increased in the direction from one end 11a side to the other end 11b side.
  • the interlayer film 11 has a region where the sectional shape in the thickness direction is a wedge-like shape and has a portion where the wedge angle ⁇ ' is increased in a direction from one end 11a side to the other end 11b side in the region where the sectional shape in the thickness direction is a wedge-like shape.
  • the wedge angle ⁇ ' is increased in the direction from one end 11a side to the other end 11b side.
  • the wedge angle can be calculated as a wedge angle in the case of assuming that the surface of an interlayer film portion extending between both ends apart from each other by a distance of 0.1X is a flat surface.
  • the wedge angle ⁇ shown in Fig. 1 is a wedge angle in an overall region where the sectional shape in the thickness direction of the interlayer film 11 is a wedge-like shape.
  • Fig. 2 is a sectional view schematically showing an interlayer film for laminated glass in accordance with a second embodiment of the present invention.
  • Fig. 2 a section in the thickness direction of an interlayer film 11A is shown.
  • the interlayer film 11A shown in Fig. 2 is provided with a first layer 1A.
  • the interlayer film 11A has a one-layer structure composed only of the first layer 1A and is a single-layered interlayer film.
  • the interlayer film 11A is singly constituted by the first layer 1A.
  • the interlayer film 11A is used for obtaining laminated glass.
  • the interlayer film 11A is an interlayer film for laminated glass.
  • the sectional shape in the thickness direction of the first layer 1A corresponding to the interlayer film 11A is a wedge-like shape.
  • the interlayer film 11A has one end 11a and the other end 11b at the opposite side of the one end 11a.
  • the one end 11a and the other end 11b are end parts of both sides facing each other.
  • the thickness of the one end 11a of the interlayer film 11A is thinner than the thickness of the other end 11b thereof. Accordingly, the first layer 1A corresponding to the interlayer film 11A has a region being thin in thickness and a region being thick in thickness.
  • the interlayer film 11 shown in Fig. 1 has a structure in which the rectangular-shaped first layer 1 is sandwiched between the wedge-shaped second layer 2 and the wedge-shaped third layer 3.
  • Figs. 3 to 8 the first to sixth modified examples in which the interlayer film is changed in the shape of each layer are shown.
  • any of interlayer films of the first to sixth modified examples has a region where the thickness is made to increase, has a region where the thickness is made to increase in a direction from one end 11a side to the other end 11b side and has a portion where the amount of increase in the thickness is increased in the direction from one end 11a side to the other end 11b side in the region where the thickness is made to increase, and furthermore, has a region where the sectional shape in the thickness direction is a wedge-like shape and has a portion where the wedge angle ⁇ ' is increased in a direction from one end 11a side to the other end 11b side in the region where the sectional shape in the thickness direction is a wedge-like shape.
  • An interlayer film 11B in accordance with the first modified example shown in Fig. 3 is provided with a first layer 1B having a sectional shape in the thickness direction of a wedge-like shape, a second layer 2B having a sectional shape in the thickness direction of a wedge-like shape, and a third layer 3B having a sectional shape in the thickness direction of a wedge-like shape.
  • the first layer 1B is arranged between the second layer 2B and the third layer 3B to be sandwiched therebetween.
  • the thickness of one end 11a side of each of the first layer 1B, the second layer 2B, and the third layer 3B is thinner than that of the other end 11b side thereof. Accordingly, the interlayer film 11B has a region being thin in thickness and a region being thick in thickness. In this connection, an interlayer film 11B may not have a third layer 3B.
  • the interlayer film 11B is made to have a portion where the amount of increase in the thickness is increased in a direction from one end 11a side to the other end 11b side and have a portion where the wedge angle ⁇ ' is increased in the direction from one end 11a side to the other end 11b side.
  • An interlayer film 11C in accordance with the second modified example shown in Fig. 4 is provided with a first layer 1C having a sectional shape in the thickness direction of a rectangular shape, a second layer 2C having a sectional shape in the thickness direction of a wedge-like shape, and a third layer 3C having a sectional shape in the thickness direction of a rectangular shape.
  • the first layer 1C is arranged between the second layer 2C and the third layer 3C to be sandwiched therebetween.
  • the thickness of one end 11a side of the second layer 2C is thinner than that of the other end 11b side thereof. Accordingly, the interlayer film 11C has a region being thin in thickness and a region being thick in thickness. In this connection, an interlayer film 11C may not have a third layer 3C.
  • the interlayer film 11C is made to have a portion where the amount of increase in the thickness is increased in a direction from one end 11a side to the other end 11b side and have a portion where the wedge angle ⁇ ' is increased in the direction from one end 11a side to the other end 11b side.
  • An interlayer film 11D in accordance with the third modified example shown in Fig. 5 is provided with a first layer 1D having a sectional shape in the thickness direction of a wedge-like shape, a second layer 2D having a sectional shape in the thickness direction of a curved rectangle-like shape, and a third layer 3D having a sectional shape in the thickness direction of a curved rectangle-like shape.
  • the whole second layer 2D has a uniform thickness.
  • the whole third layer 3D has a uniform thickness.
  • the first layer 1D is arranged between the second layer 2D and the third layer 3D to be sandwiched therebetween.
  • the thickness of one end 11a side of the first layer 1D is thinner than that of the other end 11b side thereof. Accordingly, the interlayer film 11D has a region being thin in thickness and a region being thick in thickness. In this connection, an interlayer film 11D may not have a third layer 3D.
  • the interlayer film 11D is made to have a portion where the amount of increase in the thickness is increased in a direction from one end 11a side to the other end 11b side and have a portion where the wedge angle ⁇ ' is increased in the direction from one end 11a side to the other end 11b side.
  • An interlayer film 11E in accordance with the fourth modified example shown in Fig. 6 is provided with a first layer 1E having a sectional shape in the thickness direction of a rectangular shape and a second layer 2E having a sectional shape in the thickness direction of a wedge-like shape.
  • the second layer 2E is arranged on a first surface side of the first layer 1E to be layered thereon.
  • the thickness of one end 11a side of the second layer 2E is thinner than that of the other end 11b side thereof. Accordingly, the interlayer film 11E has a region being thin in thickness and a region being thick in thickness.
  • the interlayer film 11E is made to have a portion where the amount of increase in the thickness is increased in a direction from one end 11a side to the other end 11b side and have a portion where the wedge angle ⁇ ' is increased in the direction from one end 11a side to the other end 11b side.
  • An interlayer film 11F in accordance with the fifth modified example shown in Fig. 7 is provided with a first layer 1F having a sectional shape in the thickness direction of a rectangular shape and a second layer 2F having a region 2Fa with a sectional shape in the thickness direction of a rectangular shape and a region 2Fb with a sectional shape in the thickness direction of a wedge-like shape.
  • the second layer 2F is arranged on a first surface side of the first layer 1F to be layered thereon.
  • the thickness of one end 11a side of the second layer 2F is thinner than that of the other end 11b side thereof. Accordingly, the interlayer film 11F has a region being thin in thickness and a region being thick in thickness.
  • the interlayer film 11F is made to have a portion where the amount of increase in the thickness is increased in a direction from one end 11a side to the other end 11b side and have a portion where the wedge angle ⁇ ' is increased in the direction from one end 11a side to the other end 11b side.
  • the interlayer film 11E may have a portion where the amount of increase in the thickness is not increased in a direction from one end 11a side to the other end 11b side, and the sectional shape in the thickness direction of this portion may be a rectangular shape.
  • An interlayer film 11G in accordance with the sixth modified example shown in Fig. 8 is provided with a first layer 1G having a sectional shape in the thickness direction of a rectangular shape and a second layer 2G having a region 2Ga with a sectional shape in the thickness direction of a wedge-like shape and a region 2Gb with a sectional shape in the thickness direction of a wedge-like shape.
  • the second layer 2G is arranged on a first surface side of the first layer 1G to be layered thereon.
  • the thickness of one end 11a side of the second layer 2G is thinner than that of the other end 11b side thereof. Accordingly, the interlayer film 11G has a region being thin in thickness and a region being thick in thickness.
  • the amount of increase in the thickness and the wedge angle ⁇ ' are constant in a direction from one end 11a side to the other end 11b side.
  • the amount of increase in the thickness is not increased in the direction from one end 11a side to the other end 11b side and the wedge angle ⁇ ' is not increased in the direction from one end 11a side to the other end 11b side.
  • the amount of increase in the thickness is increased in a direction from one end 11a side to the other end 11b side and the wedge angle ⁇ ' is increased in the direction from one end 11a side to the other end 11b side.
  • the interlayer film 11G may have a portion where the amount of increase in the thickness is not increased in the direction from one end 11a side to the other end 11b side, and the sectional shape in the thickness direction of this portion may be a wedge-like shape.
  • the interlayer film 11G is made to have a portion where the amount of increase in the thickness is increased in a direction from one end 11a side to the other end 11b side and have a portion where the wedge angle ⁇ ' is increased in the direction from one end 11a side to the other end 11b side.
  • interlayer films which are not categorized as the interlayer film according to the present invention are shown in Figs. 12, 13 .
  • the wedge angle ⁇ of an interlayer film is an interior angle formed at the intersection point between a straight line connecting a point on the first surface of the maximum thickness part of the interlayer film and a point on the first surface of the minimum thickness part thereof and a straight line connecting a point on the second surface of the maximum thickness part of the interlayer film and a point on the second surface of the minimum thickness part thereof.
  • the details of the first layer including a single-layered interlayer film), the second layer, and the third layer which constitute the interlayer film according to the present invention, and the details of each ingredient contained in the first layer, the second layer, and the third layer will be described.
  • the interlayer film contain a thermoplastic resin. It is preferred that the first layer contain a thermoplastic resin. It is preferred that the second layer contain a thermoplastic resin. It is preferred that the third layer contain a thermoplastic resin.
  • the thermoplastic resin a conventionally known thermoplastic resin can be used. One kind of the thermoplastic resin may be used alone, and two or more kinds thereof may be used in combination.
  • benzoate-based ultraviolet ray screening agent examples include 2,4-di-tert-butylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate ("Tinuvin 120" available from BASF Japan Ltd.), and the like.
  • the content of the ultraviolet ray screening agent to be 0.2% by weight or more in 100% by weight of a layer containing the ultraviolet ray screening agent, with regard to the interlayer film and laminated glass, the lowering in visible light transmittance thereof after the lapse of a certain period of time can be significantly suppressed.
  • Each of the first layer, the second layer, and the third layer may contain additives such as an adhesive force regulating agent, a heat shielding compound including heat shielding particles, a flame retardant, an antistatic agent, a pigment, a dye, a moisture-resistance improving agent, a fluorescent brightening agent, and an infrared ray absorber, as necessary.
  • additives such as an adhesive force regulating agent, a heat shielding compound including heat shielding particles, a flame retardant, an antistatic agent, a pigment, a dye, a moisture-resistance improving agent, a fluorescent brightening agent, and an infrared ray absorber, as necessary.
  • additives such as an adhesive force regulating agent, a heat shielding compound including heat shielding particles, a flame retardant, an antistatic agent, a pigment, a dye, a moisture-resistance improving agent, a fluorescent brightening agent, and an infrared ray absorber, as necessary.
  • One kind of these additives may
  • the interlayer film contain no tungsten oxide particles or contain tungsten oxide particles in a content of less than 0.005% by weight, it is more preferred that the interlayer film contain no tungsten oxide particles or contain tungsten oxide particles in a content of 0.003% by weight or less, and it is preferred that the interlayer film contain no tungsten oxide particles.
  • the glass plate examples include a sheet of inorganic glass and a sheet of organic glass.
  • the inorganic glass examples include float plate glass, heat ray-absorbing plate glass, heat ray-reflecting plate glass, polished plate glass, figured glass, wired plate glass, green glass, and the like.
  • the organic glass is synthetic resin glass substituted for inorganic glass.
  • the sheet of organic glass examples include a polycarbonate plate, a poly(meth)acrylic resin plate, and the like.
  • the poly(meth)acrylic resin plate examples include a polymethyl (meth)acrylate plate, and the like.
  • the interlayer film of the present invention having a specific shape
  • the interlayer film be arranged between first and second lamination glass members having a flat plate-like shape or between first and second lamination glass members having a curvature radius of 15000 mm or less to be used, and it is more preferred that the interlayer film be arranged between first and second lamination glass members having a flat plate-like shape to be used, because laminated glass satisfactory in appearance is easily obtained and double images are effectively suppressed.
  • the interlayer film may be arranged between first and second lamination glass members having a curvature radius of more than 15000 mm to be used.
  • the curvature radius of each of the first and second lamination glass members is preferably 18000 mm or less and more preferably 15000 mm or less.
  • the method for producing the laminated glass is not particularly limited.
  • the interlayer film is sandwiched between the first and second lamination glass members, and then, passed through pressure rolls or subjected to decompression suction in a rubber bag. Therefore, the air remaining between the first lamination glass member and the interlayer film and between the second lamination glass member and the interlayer film is removed.
  • the members are preliminarily bonded together at about 70 to 110°C to obtain a laminate.
  • the members are press-bonded together at about 120 to 150°C and under a pressure of 1 to 1.5 MPa. In this way, laminated glass can be obtained.
  • the laminated glass can be used for automobiles, railway vehicles, aircraft, ships, buildings, and the like. It is preferred that the laminated glass be laminated glass for building or for vehicles and it is more preferred that the laminated glass be laminated glass for vehicles.
  • the laminated glass can also be used for applications other than these applications.
  • the laminated glass can be used for a windshield, side glass, rear glass, or roof glass of an automobile, and the like. Since the laminated glass is high in heat shielding properties and is high in visible light transmittance, the laminated glass is suitably used for automobiles.
  • Thermoplastic resin is thermoplastic resin
  • Tinuvin 326 (2-(2'-hydroxy-3'-t-butyl-5-methylphenyl)-5-chlorobenzotriazole, "Tinuvin 326" available from BASF Japan Ltd.)
  • a first layer and a second layer obtained by respectively extruding the obtained Composition 1 and Composition 2 with an extruder were stacked and subjected to hot pressing to prepare an interlayer film in which the first layer having a sectional shape in the thickness direction of a rectangular shape and the second layer having a sectional shape in the thickness direction of a wedge-like shape are layered.
  • the thickness of one end in the longitudinal direction was made thinner than the thickness of the other end at the opposite side of the one end, the thickness in the transversal direction was made uniform, and the amounts of increase in the thickness in a direction from one end side to the other end side of the interlayer film were set to those listed in the following Table 1.
  • the sectional shape in the thickness direction of the interlayer film obtained was determined to be a wedge-like shape, and the interlayer film was determined to have a shape in which the thickness is gradually thickened from one end toward the other end.
  • the interlayer film was determined to have a minimum thickness at one end and have a maximum thickness at the other end.
  • the interlayer film obtained was cut into a size of 1000 mm in longitudinal length ⁇ 300 mm in transversal length so that respective middle portions in the longitudinal direction and the transversal direction are included.
  • the interlayer film was sandwiched between two sheets of transparent float glass (1000 mm in longitudinal length ⁇ 300 mm in transversal length ⁇ 2.5 mm in thickness) to obtain a laminate.
  • the laminate was put into a rubber bag and the inside thereof was degassed for 20 minutes at a degree of vacuum of 2.6 kPa, after which the laminate was transferred into an oven while being degassed, and furthermore, held in place for 30 minutes at 90°C and pressed under vacuum to subject the laminate to preliminary press-bonding.
  • the preliminarily press-bonded laminate was subjected to press-bonding for 20 minutes under conditions of 135°C and a pressure of 1.2 MPa in an autoclave to obtain a sheet of laminated glass.
  • a sheet of laminated glass was obtained in the same manner as that in Example 1 except that the shape of an interlayer film was set to that shown in the following Table 1.
  • Example 1 Comparative Example 1 Comparative Example 2 First layer Sectional shape in thickness direction Rectangular shape Rectangular shape Rectangular shape Thickness of one end ( ⁇ m) 100 100 100 Thickness of the other end ( ⁇ m) 100 100 100 100 Second layer Sectional shape in thickness direction Wedge-like shape Wedge-like shape Wedge-like shape Thickness of one end ( ⁇ m) 661 661 675.0 Thickness of the other end ( ⁇ m) 1359.0 1349.5 1373.0 Sectional shape in thickness direction Wedge-like shape Wedge-like shape Wedge-like shape Wedge-like shape Thickness of one end ( ⁇ m) 761 761 775 Amount of increase in thickness in region between positions OX and 0.1X from one end (amount of increase in thickness within distance range of 0.1X) ( ⁇ m) 67 .5 76.5 102.5 Amount of increase in thickness in region between positions 0.1X and 0.2X from one end (amount of increase in thickness within distance range of 0.1X) ( ⁇ m)
  • Example 1 it has become apparent that the overall area between the first position at a distance of 0.15X from the one end of the interlayer film and the second position at a distance of 0.85X from the one end of the interlayer film is also suppressed in double images.
  • Example 1 was shown as a specific example in which an interlayer film shown in Fig. 6 was prepared. Even when interlayer films shown in Figs. 1 to 5 , 7, and 8 are prepared, by providing these interlayer films with the configuration of the present invention, double images can be effectively suppressed.

Landscapes

  • Joining Of Glass To Other Materials (AREA)
EP16862219.9A 2015-11-05 2016-11-04 Zwischenschicht für verbundglas sowie verbundglas Pending EP3372570A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015217779 2015-11-05
PCT/JP2016/082862 WO2017078160A1 (ja) 2015-11-05 2016-11-04 合わせガラス用中間膜及び合わせガラス

Publications (2)

Publication Number Publication Date
EP3372570A1 true EP3372570A1 (de) 2018-09-12
EP3372570A4 EP3372570A4 (de) 2019-06-12

Family

ID=58662086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16862219.9A Pending EP3372570A4 (de) 2015-11-05 2016-11-04 Zwischenschicht für verbundglas sowie verbundglas

Country Status (5)

Country Link
US (1) US20180326706A1 (de)
EP (1) EP3372570A4 (de)
JP (1) JP6904706B2 (de)
TW (1) TWI746477B (de)
WO (1) WO2017078160A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11554574B2 (en) * 2015-09-30 2023-01-17 Sekisui Chemical Co., Ltd. Interlayer film for laminated glass and laminated glass
WO2017175639A1 (ja) * 2016-04-07 2017-10-12 旭硝子株式会社 合わせガラス
WO2018135495A1 (ja) * 2017-01-17 2018-07-26 積水化学工業株式会社 充填接合材、保護シート付き充填接合材、積層体、光学デバイス及び光学デバイス用保護パネル
EP3412448B1 (de) * 2017-06-02 2021-07-07 AGC Inc. Verbundglas
CN109626848B (zh) 2017-10-05 2022-12-20 Ａｇｃ株式会社 夹层玻璃
KR20200103622A (ko) * 2017-12-28 2020-09-02 세키스이가가쿠 고교가부시키가이샤 접합 유리용 중간막 및 접합 유리
DE102020106830A1 (de) 2020-03-12 2021-09-16 Bayerische Motoren Werke Aktiengesellschaft Verbundglasscheibe, insbesondere zum Einsatz in Kraftfahrzeugen
KR20230019066A (ko) * 2020-05-27 2023-02-07 세키스이가가쿠 고교가부시키가이샤 접합 유리용 중간막 및 접합 유리
DE102020120740A1 (de) 2020-08-06 2022-02-10 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen einer Verbundglasscheibe

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5812332A (en) * 1989-09-28 1998-09-22 Ppg Industries, Inc. Windshield for head-up display system
JP2007223883A (ja) * 2005-12-26 2007-09-06 Asahi Glass Co Ltd 車両用合せガラス
JP2009035444A (ja) * 2007-08-01 2009-02-19 Nippon Sheet Glass Co Ltd ウインドシールドおよびウインドシールド用中間膜
PT2217438T (pt) * 2007-12-07 2018-07-05 Saint Gobain Para-brisas curvo para veículos fabricado em vidro laminado
GB0817654D0 (en) * 2008-09-26 2008-11-05 Pilkington Automotive Deutschland Gmbh Laminated glazing
JP2011088801A (ja) * 2009-10-26 2011-05-06 Nippon Sheet Glass Co Ltd 合わせガラス
JP2011207645A (ja) * 2010-03-29 2011-10-20 Nippon Sheet Glass Co Ltd 車両用合わせガラス
JP5712208B2 (ja) * 2010-05-21 2015-05-07 三菱瓦斯化学株式会社 合成樹脂積層体
JP2013001595A (ja) * 2011-06-15 2013-01-07 Sekisui Chem Co Ltd 合わせガラス用中間膜及び合わせガラス
DE102013012648A1 (de) * 2013-07-30 2014-03-27 Daimler Ag Windschutzscheibe für einen ein Head-up-Display umfassenden Kraftwagen
HUE052354T2 (hu) * 2013-12-12 2021-04-28 Saint Gobain Hõre lágyuló film függõleges és vízszintes irányban nemlineáris folytonos ékbetéttel rendelkezõ kompozit üvegtáblához
US20150251377A1 (en) * 2014-03-07 2015-09-10 Corning Incorporated Glass laminate structures for head-up display system
EP3176015B1 (de) * 2014-07-30 2019-04-03 AGC Inc. Glas
US9975315B2 (en) * 2014-12-08 2018-05-22 Solutia Inc. Poly(vinyl acetal) resin compositions, layers, and interlayers having enhanced optical properties
KR102609909B1 (ko) * 2015-09-30 2023-12-06 세키스이가가쿠 고교가부시키가이샤 접합 유리용 중간막 및 접합 유리
EP3251836A1 (de) * 2016-05-30 2017-12-06 AGC Glass Europe Verfahren zur herstellung hud-kompatibler windschutzscheiben und universelle keilschicht für eine windschutzscheibe

Also Published As

Publication number Publication date
TWI746477B (zh) 2021-11-21
JP6904706B2 (ja) 2021-07-21
EP3372570A4 (de) 2019-06-12
TW201728550A (zh) 2017-08-16
JPWO2017078160A1 (ja) 2018-08-16
US20180326706A1 (en) 2018-11-15
WO2017078160A1 (ja) 2017-05-11

Similar Documents

Publication Publication Date Title
US10596785B2 (en) Intermediate film for laminated glass, and laminated glass
EP3392222B1 (de) Zwischenschicht für verbundglas, wickelkörper und verbundglas
EP3357891B1 (de) Zwischenschicht für verbundglas sowie verbundglas
EP3372570A1 (de) Zwischenschicht für verbundglas sowie verbundglas
US11648754B2 (en) Interlayer for laminated glass, and laminated glass
EP3357887B1 (de) Zwischenschicht für verbundglas sowie verbundglas
US20230001671A1 (en) Intermediate film for laminated glasses, and laminated glass
US11298919B2 (en) Interlayer for laminated glass, and laminated glass
US20230166482A1 (en) Laminated glass
US10906273B2 (en) Interlayer for laminated glass, and laminated glass
US11685143B2 (en) Intermediate film for laminated glasses, and laminated glass
EP3604255A1 (de) Zwischenfolie für verbundglas, walzenkörper und verbundglas
EP3357888B1 (de) Zwischenschicht für verbundglas sowie verbundglas
US11945192B2 (en) Interlayer film for laminated glass, and laminated glass
EP3865465A1 (de) Zwischenfolie für verbundglas sowie verbundglas
EP3527543A1 (de) Verbundglaszwischenfolie sowie verbundglas
EP3527542A1 (de) Verbundglaszwischenfolie, gewalzter körper und verbundglas
US20210129502A1 (en) Intermediate film for laminated glasses, and laminated glass
EP3730467A1 (de) Zwischenschichtfolie für verbundglas sowie verbundglas

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180504

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20190509

RIC1 Information provided on ipc code assigned before grant

Ipc: G02B 27/01 20060101ALI20190503BHEP

Ipc: B32B 27/30 20060101ALI20190503BHEP

Ipc: C03C 27/12 20060101AFI20190503BHEP

Ipc: B32B 17/10 20060101ALI20190503BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20220301